| CAS No. | 83548-62-3 |
| Molecular Formula | C19H13ClN2S |
| Molecular Weight | 336.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 336.84 g/mol gives 2-Benzyl-4-chloro-5-phenylthieno[2,3-d]pyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Benzyl-4-chloro-5-phenylthieno[2,3-d]pyrimidine (CAS 83548-62-3) is a high-purity analytical reference standard with the molecular formula C19H13ClN2S and a molecular weight of 336.84 g/mol.
Structurally, 2-Benzyl-4-chloro-5-phenylthieno[2,3-d]pyrimidine (C19H13ClN2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 336.84 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
| Molecular Formula | C19H13ClN2S |
| Molecular Weight | 336.84 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |